White roll
White roll is the white line that borders the top of the upper lip. It is an adnexal mass of specialized glands and fat.
White roll is the white line that borders the top of the upper lip. It is an adnexal mass of specialized glands and fat.
White roll is the white line that borders the top of the upper lip. It is an adnexal mass of specialized glands and fat.
Source: Wikipedia "White roll" · CC BY-SA 4.0
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